diff --git a/middleware/services.yml b/middleware/services.yml
index 996e88e..54a01b0 100644
--- a/middleware/services.yml
+++ b/middleware/services.yml
@@ -92,7 +92,7 @@ services:
     depends_on:
       - kafka
     environment:
-      ZK_HOSTS: ${ZOOKEEPER_CONTAINER_NAME}
+      ZK_HOSTS: ${ZOOKEEPER_CONTAINER_NAME}:2181
     ports:
       - ${KAFKA_MANAGER_LOCAL_PORT}:9000